TY - JOUR
T1 - A workflow and digital filters for correcting speed and equalization errors on digitized audio open-reel magnetic tapes
AU - Pretto, Niccolò
AU - Dalla Pozza, Nadir
AU - Padoan, Alberto
AU - Chmiel, Anthony
AU - Werner, Kurt James
AU - Micalizzi, Alessandra
AU - Schubert, Emery
AU - Rodà, Antonio
AU - Milani, Simone
AU - Canazza, Sergio
PY - 2022
Y1 - 2022
N2 - This paper presents a workflow and digital filters for compensating speed and equalization errors that can impact digitized audio open-reel tapes. Thirty cases of mismatch between recording and reproducing speed (3.75, 7.5, 15, and 30 in/s) and equalization standards [National Association of Broadcasters (NAB), Consultative Committee for International Radio (CCIR), and Audio Engineering Society] were considered. For three frequent cases of mismatch (NAB 3.75 in/s—CCIR 7.5 in/s; NAB 3.75 in/s—CCIR 15 in/s; and NAB 7.5 in/s—CCIR 15 in/s), MUltiple Stimuli with Hidden Reference and Anchor–inspired tests with ≥21 participants assessed the workflow and digital filters, using excerpts of music and voice. Two different correction filters were used, both of which provided promising results. Following this, subsequent analyses examined predictive variables for correct and incorrect MUltiple Stimuli with Hidden Reference and Anchor performance, as well as spectral and numerical differences between filters, which provide key insights and recommendations for further related work.
AB - This paper presents a workflow and digital filters for compensating speed and equalization errors that can impact digitized audio open-reel tapes. Thirty cases of mismatch between recording and reproducing speed (3.75, 7.5, 15, and 30 in/s) and equalization standards [National Association of Broadcasters (NAB), Consultative Committee for International Radio (CCIR), and Audio Engineering Society] were considered. For three frequent cases of mismatch (NAB 3.75 in/s—CCIR 7.5 in/s; NAB 3.75 in/s—CCIR 15 in/s; and NAB 7.5 in/s—CCIR 15 in/s), MUltiple Stimuli with Hidden Reference and Anchor–inspired tests with ≥21 participants assessed the workflow and digital filters, using excerpts of music and voice. Two different correction filters were used, both of which provided promising results. Following this, subsequent analyses examined predictive variables for correct and incorrect MUltiple Stimuli with Hidden Reference and Anchor performance, as well as spectral and numerical differences between filters, which provide key insights and recommendations for further related work.
UR - https://hdl.handle.net/1959.7/uws:67730
U2 - 10.17743/jaes.2022.0009
DO - 10.17743/jaes.2022.0009
M3 - Article
SN - 0004-7554
VL - 70
SP - 495
EP - 509
JO - Journal of the Audio Engineering Society
JF - Journal of the Audio Engineering Society
IS - 6
ER -